2. Disclosed is an eyesight protective writing board, which is in particular suitable for the use of the pupil. 一种能保护视力的写字板。它特别适宜小学生使用。
3. System with 2 microphones, seats, projection screen, speaker's podium, white writing board, drinking fountain and reception table. 投影白银幕、主讲台、写字白板、水机及报到台各一台。
4. The multipurpose writing plate is composed of a baseplate, a writing board and an arithmetic unit. The arithmetic unit is fixed to the baseplate. 多用书写板是由基板、书写板和运算器组成,运算器固定在基板上。
5. I'm going to start by writing some numbers on the board. 我要先始于在黑板上写一些数字。